/*
 * Licensed to Crate.io GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate licenses
 * this file to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.breaker;

import static org.assertj.core.api.Assertions.assertThatThrownBy;

import java.util.Collections;
import java.util.stream.IntStream;

import org.elasticsearch.common.breaker.ChildMemoryCircuitBreaker;
import org.elasticsearch.common.breaker.CircuitBreakingException;
import org.elasticsearch.indices.breaker.BreakerSettings;
import org.elasticsearch.indices.breaker.NoneCircuitBreakerService;
import org.elasticsearch.test.ESTestCase;
import org.junit.Test;

import io.crate.data.testing.RowGenerator;
import io.crate.types.DataTypes;

public class RowAccountingWithEstimatorsTest extends ESTestCase {

    @Test
    public void testCircuitBreakingWorks() throws Exception {
        TypedRowAccounting rowAccounting = new TypedRowAccounting(
            Collections.singletonList(DataTypes.INTEGER),
            ConcurrentRamAccounting.forCircuitBreaker(
                "test",
                new ChildMemoryCircuitBreaker(
                    new BreakerSettings("test", 10),
                    new NoneCircuitBreakerService()),
                0
            ));

        assertThatThrownBy(() -> RowGenerator.range(0, 3).forEach(rowAccounting::accountForAndMaybeBreak))
            .isExactlyInstanceOf(CircuitBreakingException.class);
    }

    @Test
    public void testRowCellsAccountingCircuitBreakingWorks() throws Exception {
        TypedCellsAccounting rowAccounting = new TypedCellsAccounting(
            Collections.singletonList(DataTypes.INTEGER),
            ConcurrentRamAccounting.forCircuitBreaker(
                "test",
                new ChildMemoryCircuitBreaker(
                    new BreakerSettings("test", 10),
                    new NoneCircuitBreakerService()
                ),
                0
            ), 0);

        assertThatThrownBy(
            () -> IntStream.range(0, 3).forEach(i -> rowAccounting.accountForAndMaybeBreak(new Object[]{i}))
        ).isExactlyInstanceOf(CircuitBreakingException.class);
    }

    @Test
    public void testCircuitBreakingWorksWithExtraSizePerRow() throws Exception {
        TypedRowAccounting rowAccounting = new TypedRowAccounting(
            Collections.singletonList(DataTypes.INTEGER),
            ConcurrentRamAccounting.forCircuitBreaker(
                "test",
                new ChildMemoryCircuitBreaker(
                    new BreakerSettings("test", 10),
                    new NoneCircuitBreakerService()
                ),
                0
            ),
            2);

        assertThatThrownBy(
            () -> RowGenerator.range(0, 2).forEach(rowAccounting::accountForAndMaybeBreak)
        ).isExactlyInstanceOf(CircuitBreakingException.class);
    }
}
